|Qualitative Flow Visualization of a 110-N Hydrogen/Oxygen Laboratory Model Thruster - deGroot, Wim A.|
The flow field inside a 110 N gaseous hydrogen/oxygen thruster was investigated using an optically accessible, two-dimensional laboratory test model installed in a high altitude chamber. The injector for this study produced an oxidizer-rich core flow, which was designed to fully mix and react inside a fuel-film sleeve insert before emerging into the main chamber section, where a substantial fuel film cooling layer was added to protect the chamber wall...
Keywords: LIQUID BRIDGES; TRANSITION POINTS; VIBRATION; STABILITY; FORCE DISTRIBUTION; OPTICAL MEASUREMENT; IMAGING TECHNIQUES; HIGH RESOLUTION; NUMERICAL CONTROL; PLATEAUS; MICROGRAVITY; RESONANT FREQUENCIES
|Electrolysis Propulsion for Spacecraft Applications - deGroot, Wim A.|
Electrolysis propulsion has been recognized over the last several decades as a viable option to meet many satellite and spacecraft propulsion requirements. This technology, however, was never used for in-space missions. In the same time frame, water based fuel cells have flown in a number of missions. These systems have many components similar to electrolysis propulsion systems. Recent advances in component technology include: lightweight tankage, water vapor feed electrolysis, fuel cell technol...
Keywords: UNSTEADY FLOW; BLUFF BODIES; PERIODIC VARIATIONS; ANGLE OF ATTACK; SUBSONIC WIND TUNNELS; RECTANGULAR WINGS; FLOW DISTRIBUTION; SEPARATED FLOW; FREQUENCIES; AERODYNAMIC STALLING; PRESSURE OSCILLATIONS